Abstract
The track and power supply used on the Channel Tunnel Rail Link is closely based on the French TGV system. The first 74 km section in Kent uses a ballasted track, with UIC60 rails on composite sleepers. But, unlike other high-speed railways, the route has numerous tight bends and a requirement to carry lower-speed traffic, resulting in compromised cant values. Traction power is provided by a French-style overhead 25 kV catenary system, though Eurostar trains also have to run on a 750 V third rail system when stopping at Ashford station.
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